Sewing-machine.



e. E. MOLYNEUX.

SEWING MACHINE.

'APPLICATION FILED IULY 20. 1912.

1 1 96,80 l Patented Sept. 5, 1916.

2 SHEETS-SHEET 2.

WQWS By www? A TTOHIVEY 'UNITED srA'rEs PATENT oEEicE.

GEORGE E. vIVIOI'JYN EUX, 0E BAYONNE, NEW JERSEY, ASSIGNOR T0 THE SINGERMANU- FACTURIN G COMPANY, .ACORPORATION 0F NEW JERSEY.

SEWING-MACHINE.

Specification of Letters Patent.

Patented Sept. 5, 1916.

Application filed July 20, 1912. Serial N o. 710,597.

To all whom/it may concern:

Beit known Vthat I, GEORGE E. MoLYNEUX, a citizen of the United States,residing at Bayonne, in the county of Hudson and State of New Jersey,have invented certain new and useful Improvements in Sewing-Machines, ofwhich the following is a specification, reference being had therein tothe accompanying drawings.

This invention relates to improvements in feeding mechanism for sewingmachines., and is particularly applicable to the sewing of knit goods,the object being to provide a work-feeding element manually controlledto vary the field of its effective action with respect to the line ofneedle actuation, so that the feeding element and the material may beengaged in the same plane or in different planes, dependent upon whetherit is desired to crowd the goods or maintain a uniform amplitude of feedmovements of the material.

The invention is designed for application to a Singer 62 class machine,substantially such as is represented by U. S. Patent No. 1,005,645,issued October 10, 1911, to W. H. Hugg, but as it relates only to theconstruction and application of the feeding mechanism, only suchreference will be made to the other elements of the machine as is deemednecessary for a proper understanding of its application,

In the accompanying drawings illustrating the invention, in the severalfigures of which like parts are similarly designated, Figures 1 and 24are front end and plan views, respectively, and Fig. 3 a rear sideelevation of the improved feeding mechanism, together with so much ofthe sewing machine frame and earlier construction of cloth-feedingmechanism as is deemed necesy sary for an understanding of theconstruction and relative action of the various elements, and Fig. 4 aview in cross section on the line urz-m, Fig. 1.

Referring to the figures, 1 represents the sewing machine frame carryingthe needleplate 2, above which is suspended, in a manner common tosewing machines generally, the cloth-presser 3, through which descendsthe eye-pointed needle 4.

5 represents the main or looper-drivin-g shaft mounted in suitablebearings formed in the sewing machine frame (6 and 7 only of which areshown), the bearing 6 comprising an integral part of the frame, and thebearing 7 being formed in the bracket 8 securedby a suitable screw `(notshown) 'to the front end of the frame 1. The shaft 5 1s provided withthe usual adjustable feedeccentric 9 encircled by a strap 10 formingapart of the feed-eccentric 11,;the opposite end of which is pivotallyconnected with a stud screw 12 threaded into the arm 13 of theoscillating feed-bracket 14 mounted on a shaft 15 secured by screws, as16, in the stationary bracket 1'7, which in turn is secured by screw 18to the frame 1.

19 represents the feed-dog-carrying bar secured at one end by screw 20on a short shaft 21 mounted in the spaced bearing lugs 22 and 23 formingpart of the feed-bracket 14, the opposite end of said feed-dog-carryingbar being provided with a downwardly extended portion 24 forked toreceive the eccentric block 25 mounted on the eccentric 26, which inturn is secured on the reduced portion 27 of the main shaft 5. All ofthe foregoing parts are common to the class of machines represented byPatent No. 1,005,645, previously referred to, and are herein shown asrepresenting a preferred form of construction to which the presentinvention is applicable.

Referring now to the features in construction directly connected withthe invention, 28 represents a feed-dog which is provided with the usualserrated feeding surface 29 and pivotally attached by a screw 30 to thehead 31 of the feed-dog-carrying bar 19.

32 is a feed-dog-adjusting bar mounted to move endwise in bearing lugs33 and 34 carried by the bar 19, the bar 32 being pivotally attached atone end by screw 35 to the lower end of the feed-dog, and at itsopposite end is acted on by a cam 36 mounted loosely on the short shaft21 and provided 4with a cam portion 37 and treadle arm 38, the latterbeing connected by a suitable chain, as 39, to one form of commonlyemployed treadle (not shown). On the bar 32 is mounted a spring 40seated at one end against the bearing lug 34, its opposite end bearingagainst a collar 41 secured by screw 42 on the bar 32 to limit themovements of the latter in a direction toward the cam portion 37, acollar 43 secured by screw 44 acting to limit the movements of said barin the opposite direction.

From the foregoing it will be understood that When the feeding mechanismis free to be actuated independently of manual control, the serratedsurface of the feed-dog Will occupy a plane corresponding to that of theunder surface of the cloth-presser, but if it is desired to slightlyfull or gather the fabrics as they are fed to the action of thestitch-forming mechanism, the opera-tor will, through the manipulationof a suitable treadle operatively connected with the feeddog, cause theserrated surface of the latter to occupy a plane slightly inclined tothe under surface of the feed-dog, as shown in dotted lines7 Fig. 1.

Claim:

In a sewing machine, the combination With a stitch-forming andcloth-feeding mechanism including a feed-dog carrying bar provided Witha pivotally mounted feeddog, of means including a resiliently andslidably mounted cam controlled feed-dog adjusting bar held againstmovement about its longitudinal axis for eecting adjustments of saidfeed-dog With respect to the line of needle actuation independently ofthe movements of said feed-dog carrying bar.

In testimony whereof, I have signed my name to this specification, inthe presence of two subscribing Witnesses.

GEORGE E. MOLYNEUX.

Witnesses:

H. A. KORNEMANN, Jr. W. P. STEWART.

Gopies of this patent may be obtained for ve cents each, by addressingthe Commissioner of Patents, Washington. D. C.

